Subject: Re: [PATCH V5 4/5] bnxt_en: Add TPH support in BNXT driver

From: kernel test robot <[email-masked]>
Date: Fri, 20 Sep 2024 18:38:55 +0800

Hi Wei,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on next-20240920]
[cannot apply to pci/next pci/for-linus v6.11]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Wei-Huang/PCI-Add-TLP-Processing-Hints-TPH-support/20240917-045345
base:   linus/master
patch link:    https://lore.kernel.org/r/20240916205103.3882081-5-wei.huang2%40amd.com
patch subject: [PATCH V5 4/5] bnxt_en: Add TPH support in BNXT driver
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20240920/[email-masked]/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240920/[email-masked]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email-masked]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email-masked]/

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/broadcom/bnxt/bnxt.c: In function '__bnxt_irq_affinity_notify':
>> drivers/net/ethernet/broadcom/bnxt/bnxt.c:10873:35: warning: variable 'rxr' set but not used [-Wunused-but-set-variable]
   10873 |         struct bnxt_rx_ring_info *rxr;
         |                                   ^~~

vim +/rxr +10873 drivers/net/ethernet/broadcom/bnxt/bnxt.c

 10869	
 10870	static void __bnxt_irq_affinity_notify(struct irq_affinity_notify *notify,
 10871					       const cpumask_t *mask)
 10872	{
 10873		struct bnxt_rx_ring_info *rxr;
 10874		struct bnxt_irq *irq;
 10875		u16 tag;
 10876		int err;
 10877	
 10878		irq = container_of(notify, struct bnxt_irq, affinity_notify);
 10879		cpumask_copy(irq->cpu_mask, mask);
 10880	
 10881		if (pcie_tph_get_cpu_st(irq->bp->pdev, TPH_MEM_TYPE_VM,
 10882					cpumask_first(irq->cpu_mask), &tag))
 10883			return;
 10884	
 10885		if (pcie_tph_set_st_entry(irq->bp->pdev, irq->msix_nr, tag))
 10886			return;
 10887	
 10888		if (netif_running(irq->bp->dev)) {
 10889			rxr = &irq->bp->rx_ring[irq->ring_nr];
 10890			rtnl_lock();
 10891			err = netdev_rx_queue_restart(irq->bp->dev, irq->ring_nr);
 10892			if (err)
 10893				netdev_err(irq->bp->dev,
 10894					   "rx queue restart failed: err=%d\n", err);
 10895			rtnl_unlock();
 10896		}
 10897	}
 10898	

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